213663772 has 12 divisors (see below), whose sum is σ = 427327600. Its totient is φ = 91570176.

The previous prime is 213663763. The next prime is 213663781. The reversal of 213663772 is 277366312.

It is an interprime number because it is at equal distance from previous prime (213663763) and next prime (213663781).

213663772 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3815397 + ... + 3815452.

Almost surely, 2^213663772 is an apocalyptic number.

It is an amenable number.

213663772 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213663772 is a wasteful number, since it uses less digits than its factorization.

213663772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7630860 (or 7630858 counting only the distinct ones).

The product of its digits is 63504, while the sum is 37.

The square root of 213663772 is about 14617.2422843709. The cubic root of 213663772 is about 597.8289798532.

The spelling of 213663772 in words is "two hundred thirteen million, six hundred sixty-three thousand, seven hundred seventy-two".